package com.pritom.kumar; import javax.crypto.Mac; import javax.crypto.spec.SecretKeySpec; /** * Created by pritom on 09/10/2014. */ public class HmacSha1 { public static void main(String[] args) { System.out.println(hmacSha1("mykey", "helloworld")); System.out.println(hmacSha256("mykey", "helloworld")); } public static String hmacSha1(String KEY, String VALUE) { return hmacSha(KEY, VALUE, "HmacSHA1"); } public static String hmacSha256(String KEY, String VALUE) { return hmacSha(KEY, VALUE, "HmacSHA256"); } private static String hmacSha(String KEY, String VALUE, String SHA_TYPE) { try { SecretKeySpec signingKey = new SecretKeySpec(KEY.getBytes("UTF-8"), SHA_TYPE); Mac mac = Mac.getInstance(SHA_TYPE); mac.init(signingKey); byte[] rawHmac = mac.doFinal(VALUE.getBytes("UTF-8")); byte[] hexArray = { (byte)'0', (byte)'1', (byte)'2', (byte)'3', (byte)'4', (byte)'5', (byte)'6', (byte)'7', (byte)'8', (byte)'9', (byte)'a', (byte)'b', (byte)'c', (byte)'d', (byte)'e', (byte)'f' }; byte[] hexChars = new byte[rawHmac.length * 2]; for ( int j = 0; j < rawHmac.length; j++ ) { int v = rawHmac[j] & 0xFF; hexChars[j * 2] = hexArray[v >>> 4]; hexChars[j * 2 + 1] = hexArray[v & 0x0F]; } return new String(hexChars); } catch (Exception ex) { throw new RuntimeException(ex); } } }
Output would be like this:
74ae5a4a3d9996d5918defc2c3d475471bbf59ac7fdfaa9c9c0931f52d9ebf2538bc99700f2e771f3af1c1d93945c2256c11aedd
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